What it is
Tapioca starch is a fine polysaccharide powder extracted from the cassava root that readily absorbs oil and moisture. In cosmetics it is used to mattify, reduce greasy or tacky feel, and lend a soft, powdery, velvety finish. In sunscreens it is valued for improving skin feel and helping counter the heaviness of UV filters and emollients.
Safety & warnings
Tapioca starch is generally well tolerated and considered low-irritation in topical use. It is not a recognized fragrance allergen. As a starch it is sometimes flagged as a possible food source for skin microbes, but it is widely used without notable issues in cosmetic formulations.
Origin & sourcing
Natural plant-derived starch extracted from the tuberous root of the cassava plant (Manihot esculenta).
Questions everyone asks
Why is tapioca starch added to sunscreen?
It absorbs oil and lends a soft, dry, matte finish, helping reduce the greasy or heavy feel that UV filters and emollients can leave.
Where does tapioca starch come from?
It is a starch extracted from the root of the cassava plant, the same source used to make tapioca for food.